Forget everything you think you know about stripes and plaid. These two patterns, which were once reserved for schoolgirls and Beetlejuice, have now become the go-to trends for spring 2013. Not only do they stand out when worn on their own, but they also make a perfect mixed-print combo when paired together or with other prints. Here are some of our favorite street style representations of the trend. Click through to take a cue on how to pull them off this season.